As I said on the previous page, I use Glossy Accents (which I believe is the same as Crystal Effects) for adhering the paper to the gem and the magnets to the paper. I generally put the gems face-down to dry, i.e. glue the magnet on and leave it 'on top' of the gem. Perhaps those super-strong magnets are trickier, but I've never had a problem with the ordinary little round magnets I use.